Brilliant.org

Effective learning is interactive, not passive. Brilliant helps you understand concepts through examples and problems contributed by a community of mathematicians, scientists, and engineers.

Brilliant is a fun way to build your problem solving skills. Take quizzes and solve problems from easy to very challenging. Choose from thousands of problems in math, science, SAT, AP, JEE, olympiads, and more!

Achieve excellence through practice. Learn from a vibrant community of over 2 million students, educators, and enthusiasts, including olympiad champions, international science fair medalists, high school teachers, and university professors.

Send feedback to ios@brilliant.org
You can use Brilliant on the web at https://brilliant.org

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For the budding barristers – you may review our privacy policy here (https://brilliant.org/privacy_policy/) and our terms of use here (https://brilliant.org/terms-of-use/) (the terms of user are better reading in our opinion).

Brilliant is free to download to use.

Brilliant offers two premium subscription plans – monthly and annual. Pricing in the United States is as follows: – Brilliant² monthly starting at $9.99 – Brilliant² annual starting at $59.99

Prices vary by location. Subscriptions will be charged to your credit card through your iTunes account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. You will not be able to cancel the subscription once activated. Manage your subscriptions in Account Settings after purchase.

Lulu says

« This site presents the user with problem solving situations in maths and sciences. There are varying levels of difficulty. Interesting aspect: the user can create a community, share problems and invite members to respond to a challenge. It’s a good tool to develop problem solving and critical thinking skills. »